updated smartcontracts

- updated smartcontracts
- updated fullnode database layout
- fixed memory leak in blockchain-explorer
- updated tonlib

tdnet/td/net/UdpServer.cpp

@@ -130,70 +130,6 @@ void UdpServerImpl::hangup_shared() {
   stop();
 }
 
-class TcpInfiniteListener : public actor::Actor {
- public:
-  TcpInfiniteListener(int32 port, std::unique_ptr<TcpListener::Callback> callback)
-      : port_(port), callback_(std::move(callback)) {
-  }
-
- private:
-  int32 port_;
-  std::unique_ptr<TcpListener::Callback> callback_;
-  actor::ActorOwn<TcpListener> tcp_listener_;
-  int32 refcnt_{0};
-  bool close_flag_{false};
-
-  void start_up() override {
-    loop();
-  }
-
-  void hangup() override {
-    close_flag_ = true;
-    tcp_listener_.reset();
-    if (refcnt_ == 0) {
-      stop();
-    }
-  }
-
-  void loop() override {
-    if (!tcp_listener_.empty()) {
-      return;
-    }
-    class Callback : public TcpListener::Callback {
-     public:
-      Callback(actor::ActorShared<TcpInfiniteListener> parent) : parent_(std::move(parent)) {
-      }
-      void accept(SocketFd fd) override {
-        actor::send_closure(parent_, &TcpInfiniteListener::accept, std::move(fd));
-      }
-
-     private:
-      actor::ActorShared<TcpInfiniteListener> parent_;
-    };
-    VLOG(udp_server) << "Create listener";
-    refcnt_++;
-    tcp_listener_ = actor::create_actor<TcpListener>(
-        actor::ActorOptions().with_name(PSLICE() << "TcpListener" << tag("port", port_)).with_poll(), port_,
-        std::make_unique<Callback>(actor_shared(this)));
-  }
-
-  void accept(SocketFd fd) {
-    callback_->accept(std::move(fd));
-  }
-
-  void hangup_shared() override {
-    refcnt_--;
-    tcp_listener_.reset();
-    if (close_flag_) {
-      if (refcnt_ == 0) {
-        stop();
-      }
-    } else {
-      alarm_timestamp() = Timestamp::in(5 /*5 seconds*/);
-    }
-  }
-};
-
 class TcpClient : public td::actor::Actor, td::ObserverBase {
  public:
   class Callback {